Poly(methyl methacrylate) (PMMA) films with 4 wt% of the ionic second order NLO chromophore [(E)-N,N-dimethylamino-N'-methylstilbazolium][p-toluenesulfonate] (DAST), obtained by spin-coating of CHCl3-CH3OH (2/1) solutions, show in situ growth of homogeneously dispersed oriented nanocrystals with sizes of less than 100 nm, as supported by TEM and GIXRD evidence. This is achieved by a two step process: corona poling at 8 kV and 90 °C followed, in the absence of electric field, by controlled thermal annealing up to 140 °C. The final film shows a significant and enduring second harmonic generation (SHG) at room temperature

Stable SHG from in situ grown oriented nanocrystals of [(E)-N,N-dimethylamino-N'-methylstilbazolium][p-toluenesulfonate] in a PMMA film / R. Macchi, E. Cariati, D. Marinotto, D. M. Roberto, E. Tordin, R. Ugo, R. Bozio, M. Cozzuol, D. Pedron, G. Mattei. - In: JOURNAL OF MATERIALS CHEMISTRY. - ISSN 0959-9428. - 20:10(2010), pp. 1885-1890. [10.1039/B922185A]

Stable SHG from in situ grown oriented nanocrystals of [(E)-N,N-dimethylamino-N'-methylstilbazolium][p-toluenesulfonate] in a PMMA film

R. Macchi
Primo
;
E. Cariati
Secondo
;
D. Marinotto;D.M. Roberto;E. Tordin;R. Ugo;
2010

Abstract

Poly(methyl methacrylate) (PMMA) films with 4 wt% of the ionic second order NLO chromophore [(E)-N,N-dimethylamino-N'-methylstilbazolium][p-toluenesulfonate] (DAST), obtained by spin-coating of CHCl3-CH3OH (2/1) solutions, show in situ growth of homogeneously dispersed oriented nanocrystals with sizes of less than 100 nm, as supported by TEM and GIXRD evidence. This is achieved by a two step process: corona poling at 8 kV and 90 °C followed, in the absence of electric field, by controlled thermal annealing up to 140 °C. The final film shows a significant and enduring second harmonic generation (SHG) at room temperature
Settore CHIM/03 - Chimica Generale e Inorganica
2010
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/147197
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